Most Helpful Guy
It pretty much just comes down to one thing in almost all circumstances. They aren't attracted to you enough to date you. I say attraction in regards to the whole package. You might of been hot enough to fuck for one night but that's it.
Getting a lot of sex as an average girl isn't that hard to do at all. An average guy is not going to be able to get nearly as much sex. For a guy to get casual sex he has to be above average in some way, shape, or form.
I just talked about this on my last opinion but I can't stand it when these girls who are average as a whole package at best try to act like they are of such high value because they can fuck all of these dudes and have a bunch of nerds creeping on them. All of those guys are only trying to get at them for one reason. Your value is only your pussy.
If you're looking for a relationship through trial and error a multitude of times and find guys only wanting you for sex.. new flash. You're not as great as you think and no guys aren't 'intimidated' by you lmao.
Most Helpful Girl
Because now they got what they wanted and don't need to make any more effort. They are not excited as much anymore because the catch was easy and it's a turn off.
You always gotta make yourself look like a prize, don't give it up too quick.
They run away because sex was all they wanted and now their mission is completed. Now they are out doing the exact same thing to the next girl. More girls they do, bigger legends they are when they brag out to their friends. It boosts their ego.
Make a guy wait, that way you'll know whether he's serious about you or just here to hit it and quit it.
Ps: there also might be a little chance that they started catching feelings so they pulled away but this one is like less likely to happen.